<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <meta http-equiv="X-UA-Compatible" content="ie=edge" />
  <title>微博发布</title>
  <style>
    * {
      margin: 0;
      padding: 0;
    }

    ul {
      list-style: none;
    }

    .w {
      width: 900px;
      margin: 0 auto;
    }

    .controls textarea {
      width: 878px;
      height: 100px;
      resize: none;
      border-radius: 10px;
      outline: none;
      padding-left: 20px;
      padding-top: 10px;
      font-size: 18px;
    }

    .controls {
      overflow: hidden;
    }

    .controls div {
      float: right;
    }

    .controls div span {
      color: #666;
    }

    .controls div .useCount {
      color: red;
    }

    .controls div button {
      width: 100px;
      outline: none;
      border: none;
      background: rgb(0, 132, 255);
      height: 30px;
      cursor: pointer;
      color: #fff;
      font: bold 14px '宋体';
      transition: all 0.5s;
    }

    .controls div button:hover {
      background: rgb(0, 225, 255);
    }

    .controls div button:disabled {
      background: rgba(0, 225, 255, 0.5);
    }

    .contentList {
      margin-top: 50px;
    }

    .contentList li {
      padding: 20px 0;
      border-bottom: 1px dashed #ccc;
      position: relative;
    }

    .contentList li .info {
      position: relative;
    }

    .contentList li .info span {
      position: absolute;
      top: 15px;
      left: 100px;
      font: bold 16px '宋体';
    }

    .contentList li .info p {
      position: absolute;
      top: 40px;
      left: 100px;
      color: #aaa;
      font-size: 12px;
    }

    .contentList img {
      width: 80px;
      border-radius: 50%;
    }

    .contentList li .content {
      padding-left: 100px;
      color: #666;
      word-break: break-all;
    }

    .contentList li .the_del {
      position: absolute;
      right: 0;
      top: 0;
      font-size: 28px;
      cursor: pointer;
    }
  </style>
</head>

<body>
  <div class="w">
    <!-- 操作的界面 -->
    <div class="controls">
      <img src="./images/9.6/tip.png" alt="" /><br />
      <!-- maxlength 可以用来限制表单输入的内容长度 -->
      <textarea placeholder="说点什么吧..." id="area" cols="30" rows="10" maxlength="200"></textarea>
      <div>
        <span class="useCount" id="useCount">0</span>
        <span>/</span>
        <span>200</span>
        <button id="send">发布</button>
      </div>
    </div>
    <!-- 微博内容列表 -->
    <div class="contentList">
      <ul id="list">

        <!-- <li>
          <div class="info">
            <img class="userpic" src="./images/9.6/03.jpg" />
            <span class="username">死数据:百里守约</span>
            <p class="send-time">死数据:发布于 2020年12月05日 00:07:54</p>
          </div>
          <div class="content">死数据:111</div>
          <span class="the_del">X</span>
        </li> -->

      </ul>
    </div>
  </div>

  <!-- 需要的模板li 追加给 list ul -->
  <!-- <li>
    <div class="info">
      <img class="userpic" src="./images/9.6/03.jpg" />
      <span class="username">死数据:百里守约</span>
      <p class="send-time">死数据:发布于 2020年12月05日 00:07:54</p>
    </div>
    <div class="content">死数据:111</div>
    <span class="the_del">X</span>
  </li> -->

  <script>
    // 模拟数据 随机生成头像和名字
    const dataArr = [
      { uname: '司马懿', imgSrc: './images/9.5/01.jpg' },
      { uname: '女娲', imgSrc: './images/9.5/02.jpg' },
      { uname: '百里守约', imgSrc: './images/9.5/03.jpg' },
      { uname: '亚瑟', imgSrc: './images/9.5/04.jpg' },
      { uname: '虞姬', imgSrc: './images/9.5/05.jpg' },
      { uname: '张良', imgSrc: './images/9.5/06.jpg' },
      { uname: '安其拉', imgSrc: './images/9.5/07.jpg' },
      { uname: '李白', imgSrc: './images/9.5/08.jpg' },
      { uname: '阿珂', imgSrc: './images/9.5/09.jpg' },
      { uname: '墨子', imgSrc: './images/9.5/10.jpg' },
      { uname: '鲁班', imgSrc: './images/9.5/11.jpg' },
      { uname: '嬴政', imgSrc: './images/9.5/12.jpg' },
      { uname: '孙膑', imgSrc: './images/9.5/13.jpg' },
      { uname: '周瑜', imgSrc: './images/9.5/14.jpg' },
      { uname: '老夫子', imgSrc: './images/9.5/15.jpg' },
      { uname: '狄仁杰', imgSrc: './images/9.5/16.jpg' },
      { uname: '扁鹊', imgSrc: './images/9.5/17.jpg' },
      { uname: '马可波罗', imgSrc: './images/9.5/18.jpg' },
      { uname: '露娜', imgSrc: './images/9.5/19.jpg' },
      { uname: '孙悟空', imgSrc: './images/9.5/20.jpg' },
      { uname: '黄忠', imgSrc: './images/9.5/21.jpg' },
      { uname: '百里玄策', imgSrc: './images/9.5/22.jpg' },
    ]

    const weibo_ul = document.querySelector('.contentList #list')
    const btnAdd = document.querySelector('#send')
    const weibo = document.querySelector('#area')

    function setItem(arr = []) {
      const weiboStr = JSON.stringify(arr)
      localStorage.setItem('weiboData', weiboStr)
    }

    // setItem([
    //   {
    //     uname: '百里守约',
    //     imgSrc: './images/9.5/03.jpg',
    //     weibo: '测试用的哦',
    //     time: '2020年12月05日 00:07:54'
    //   }
    // ])

    function getItem() {
      const weiboStr = localStorage.getItem('weiboData')
      const weiboData = JSON.parse(weiboStr)
      return weiboData
    }

    function render() {
      const weiboData = getItem()
      const mapData = weiboData.map(function (item, index) {
        return `
        <li>
          <div class="info">
            <img class="userpic" src="${item.imgSrc}" />
            <span class="username">${item.uname}</span>
            <p class="send-time">发布于 ${item.time}</p>
          </div>
          <div class="content">${item.weibo}</div>
          <span class="the_del" data-index="${index}">X</span>
        </li>
        `
      })
      weibo_ul.innerHTML = mapData.join('')
    }

    render()

    btnAdd.addEventListener('click', function () {
      if (weibo.value.trim() !== '') {
        const weiboData = getItem()
        const randomNum = Math.floor(Math.random() * dataArr.length)
        const new_weibo = {
          uname: dataArr[randomNum].uname,
          imgSrc: dataArr[randomNum].imgSrc,
          weibo: weibo.value,
          time: new Date().toLocaleString()
        }
        weiboData.unshift(new_weibo)
        setItem(weiboData)
        render()
        weibo.value = ''
      } else {
        alert('待发布微博不能为空！')
      }
    })

    weibo_ul.addEventListener('click', function (e) {
      if (e.target.className === 'the_del') {
        const weiboData = getItem()
        weiboData.splice(e.target.dataset.index, 1)
        setItem(weiboData)
        render()
      }
    })
  </script>

</body>

</html>